Reason Code 173 | Remark Code N668

Code Description
Reason Code: 173 Service/equipment was not prescribed by a physician.
Remark Code: N668 Incomplete/invalid prescription.


Common Reasons for Denial

  • An initial Certificate of Medical Necessity (CMN) or DME Information Form (DIF) was not submitted with claim or on file with Noridian

Next Step

  • Resubmit claim with CMN or DIF if one is not on file
  • A telephone reopening may be conducted if CMN or DIF is now on file with Noridian

How to Avoid Future Denials

  • To verify a CMN or DIF is required, refer to applicable LCD and Policy Article
  • For proper claims processing, attach initial CMN or DIF to claim
    • Supplier must submit initial CMN or DIF for item billed
  • If an initial CMN or DIF is posted to Common Working File (CWF) under another jurisdiction, include a comment on claim


Last Updated Thu, 23 Jan 2020 14:31:38 +0000